Risk factor associated with protracted anaphylaxis in pediatric patients, Chiangrai prachanukroh regional hospital
Keywords:
Anaphylaxis, Protracted anaphylaxis, Adrenaline, AllergenAbstract
Background: Protracted anaphylaxis is an allergic reaction that lasts hours to days without
completely resolution of symptoms. There are less studies about factors associated with
protracted anaphylaxis
Objective: To find the associated risk factors of protracted anaphylaxis, incidence, allergen
exposure, clinical manifestation of protracted anaphylaxis
Methods: This retrospective cohort study included pediatric patients diagnosed with
anaphylaxis, aged 0-15 years, in Chiangrai Prachanukroh regional hospital, during Aug
2014 to July 2020. Patients’ medical history and treatment were collected from electronic
medical record
Results: Among 135 anaphylactic patients, rate of protracted anaphylaxis is 14.81%. Median
age is 9 years old and most patients are male (54.07%). Risk factors associated with protracted
anaphylaxis is time to adrenaline from the symptom onset more than 90 minutes (OR 5.76,
95%CI 1.05-31.51, p-value 0.043). Most common allergen exposures are food (50.37%),
unknown allergen (28.15%) and insects bite (16.30%). Most patients present with itchy
(78.52%), urticaria (71.85%) and dyspnea (55.56%).
Conclusion: Pediatric patient who was diagnosed with anaphylaxis take risk to develop
protracted anaphylaxis if delay adrenaline injection over 90 minutes. The incidence of
protracted anaphylaxis was found 14.81% and important allergen was food especially shrimp.
Clinical manifestation was described as previous studies.
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คณะทำงานเพื่อการรักษาและป้องกันการแพ้ชนิดรุนแรงแห่งประเทศไทย. แนวทางเวชปฏิบัติสำหรับการดูแลผู้ป่วยที่มีการแพ้ชนิดรุนแรง พ.ศ. 2560
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